How do you make a UINavigationBar transparent? Though I want its bar items to remain visible.
This question is related to
ios
iphone
objective-c
uinavigationbar
transparency
Another Way That worked for me is to Subclass UINavigationBar And leave the drawRect Method empty !!
@IBDesignable class MONavigationBar: UINavigationBar {
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
override func drawRect(rect: CGRect) {
// Drawing code
}}
This worked with Swift 5.
// Clear the background image.
navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
// Clear the shadow image.
navigationController?.navigationBar.shadowImage = UIImage()
// Ensure the navigation bar is translucent.
navigationController?.navigationBar.isTranslucent = true
If you build with the lastest beta iOS 13.4 and XCode 11.4, the accepted answer won't work anymore. I've found another way, maybe it's just a bug in the beta software, but I'm writing it down there, just in case
(swift 5)
import UIKit
class TransparentNavBar :UINavigationBar {
override func awakeFromNib() {
super.awakeFromNib()
self.setBackgroundImage(UIImage(), for: .default)
self.shadowImage = UIImage()
self.isTranslucent = true
self.backgroundColor = .clear
if #available(iOS 13.0, *) {
self.standardAppearance.backgroundColor = .clear
self.standardAppearance.backgroundEffect = .none
self.standardAppearance.shadowColor = .clear
}
}
}
extension UINavigationBar {
var isTransperent: Bool {
get {
return false // Just to satisfy property
}
set {
if newValue == true {
self.shadowImage = UIImage()
self.isTranslucent = true
self.setBackgroundImage(UIImage(), for: .default)
}else{
self.shadowImage = UIImage()
self.isTranslucent = false
self.setBackgroundImage(nil, for: .default)
}
}
}
}
From IOS7 :
self.navigationController.navigationBar.translucent = YES;
self.navigationController.navigationBar.shadowImage = [UIImage new];
self.navigationController.view.backgroundColor = [UIColor clearColor];
[self.navigationController.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];
self.navigationController.navigationBar.backgroundColor = [UIColor clearColor];
In Swift 4.2
self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
self.navigationController?.navigationBar.shadowImage = UIImage()
self.navigationController?.navigationBar.isTranslucent = true
(in viewWillAppear), and then in viewWillDisappear, to undo it, put
self.navigationController?.navigationBar.shadowImage = nil
self.navigationController?.navigationBar.isTranslucent = false
I know this topic is old, but if people want to know how its done without overloading the drawRect method.
This is what you need:
self.navigationController.navigationBar.translucent = YES;
self.navigationController.navigationBar.opaque = YES;
self.navigationController.navigationBar.tintColor = [UIColor clearColor];
self.navigationController.navigationBar.backgroundColor = [UIColor clearColor];
In iOS5 you can do this to make the navigation bar transparent:
nav.navigationBar.translucent = YES; // Setting this slides the view up, underneath the nav bar (otherwise it'll appear black)
const float colorMask[6] = {222, 255, 222, 255, 222, 255};
UIImage *img = [[UIImage alloc] init];
UIImage *maskedImage = [UIImage imageWithCGImage: CGImageCreateWithMaskingColors(img.CGImage, colorMask)];
[nav.navigationBar setBackgroundImage:maskedImage forBarMetrics:UIBarMetricsDefault];
[img release];
For anyone who wants to do this in Swift 2.x:
self.navigationController?.navigationBar.setBackgroundImage(UIImage(), forBarMetrics: .Default)
self.navigationController?.navigationBar.shadowImage = UIImage()
self.navigationController?.navigationBar.translucent = true
or Swift 3.x:
self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
self.navigationController?.navigationBar.shadowImage = UIImage()
self.navigationController?.navigationBar.isTranslucent = true
After doing what everyone else said above, i.e.:
navigationController?.navigationBar.setBackgroundImage(UIImage(), forBarMetrics: .default)
navigationController?.navigationBar.shadowImage = UIImage()
navigationController!.navigationBar.isTranslucent = true
... my navigation bar was still white. So I added this line:
navigationController?.navigationBar.backgroundColor = .clear
... et voila! That seemed to do the trick.
This seems to work:
@implementation UINavigationBar (custom)
- (void)drawRect:(CGRect)rect {}
@end
navigationController.navigationBar.backgroundColor = [UIColor clearColor];
This works for Swift 2.0.
navigationController!.navigationBar.setBackgroundImage(UIImage(), forBarMetrics: UIBarMetrics.Default)
navigationController!.navigationBar.shadowImage = UIImage()
navigationController!.navigationBar.translucent = true
Try the following piece of code:
self.navigationController.navigationBar.translucent = YES;
Do you mean entirely transparent, or using the translucent-black style seen in the Photos app? The latter you can accomplish by setting its barStyle
property to UIBarStyleBlackTranslucent
. The former... I'm not sure about. If you want the items on it to still be visible, you might have to do some digging around in the bar's view hierarchy and remove the view containing its background.
The below code expands upon the top answer chosen for this thread, to get rid of the bottom border and set text color:
The last two coded lines of this code set transparency. I borrowed that code from this thread and it worked perfectly!
The "clipsToBounds" property was code I found which got rid of the bottom border line with OR without transparency set (so if you decide to go with a solid white/black/etc. background instead, there will still be no border line).
The "tintColor" line (2nd coded line) set my back button to a light grey
I kept barTintColor as a backup. I don't know why transparency would not work, but if it doesn't, I want my bg white as I used to have it
let navigationBarAppearace = UINavigationBar.appearance()
navigationBarAppearace.tintColor = UIColor.lightGray
navigationBarAppearace.barTintColor = UIColor.white
navigationBarAppearace.clipsToBounds = true
navigationBarAppearace.isTranslucent = true
navigationBarAppearace.setBackgroundImage(UIImage(), for: .default)
navigationBarAppearace.shadowImage = UIImage()
NavigationController.NavigationBar.SetBackgroundImage(new UIImage(), UIBarMetrics.Default);
NavigationController.NavigationBar.ShadowImage = new UIImage();
NavigationController.NavigationBar.Translucent = true;
for Swift 3.0:
override func viewDidLoad() {
super.viewDidLoad()
navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
navigationController?.navigationBar.shadowImage = UIImage()
navigationController?.navigationBar.isTranslucent = true
}
Check RRViewControllerExtension, which is dedicated on UINavigation bar appearance management.
with RRViewControllerExtension in your project, you just need to override
-(BOOL)prefersNavigationBarTransparent;
in you viewcontroller.
Source: Stackoverflow.com